Ben: Dry-humoured, witty and intelligent guy, very calm-mannered, but he shouldn't get too close to Mario.
Caioimhe: Kind, funny, beautiful and sweet girl, loyal to her friends and fun to be around.
Corin: Irritating, thick wannabe, we've seen everything she has to give.
David: Friendly, warm-hearted and accepting, but too boring.
Govan: Fast-talking trouble maker who just bitched aimlessly, but I don't think he's completely bad.
Ife: Nice, affectionate and friendly girl, likes to make friends, genuinely cares about others.
John: Bit of a stuck-up foulmouthed vain man, he can be alright though.
Mario: Boring immature sheepish moron just follows Ben and Dave around everywhere or has a tantrum for no good reason.
Josie: Easy-going, friendly, sociable, amusing, she's not bad overall.
Nathan: Fun, jack-the-lad type guy, easy to get on with.
Rachael: Attractive, cool, sassy, she had more to give.
Shabby: Eccentric, fierce, spontaneous, hilarious and highly entertaining girl.
Sunshine: Annoying self-centred immature little brat, likes to make a spectacle of herself if she can't get her own way.
Steven: Decent respectable guy, but he fades into the background too much.

Every analogy breaks down at a point, but I still think it's mostly valid. He's on a entirely different plane than the other HMs.